vocabulary:
Pangea - means "all lands" or that all the continents were together. continental drift - moving of the continents apart. fossil - any trace of an ancient organism that has been preserved by rock.
Outline
Introduction
Africa and South America looks like jigsaw puzzles that would fit togther.
The Theory of the Continental Drift
1910 ; Alfred Wegener
Hypothesis: the continents were once joined together.
300 millions years ago
Evidence from Landforms
mountains - coal fields
mountain range from South America connects to Argetina's mountain range.
Evidence from Fossils
found common dinosaur fossils in different places
Evidence from Climate
different places in the world had opposite climates
hot places had rock scratches which indicated that glaciers were once there
Scientists Reject Wegener's theory
Wegener could not explain the forces that push or pull the continents
Table of Contents
Notes 1.3
vocabulary:
Pangea - means "all lands" or that all the continents were together.
continental drift - moving of the continents apart.
fossil - any trace of an ancient organism that has been preserved by rock.
Outline
Introduction
The Theory of the Continental Drift
- 1910 ; Alfred Wegener
- Hypothesis: the continents were once joined together.
- 300 millions years ago
Evidence from Landforms- mountains - coal fields
- mountain range from South America connects to Argetina's mountain range.
Evidence from Fossils- found common dinosaur fossils in different places
Evidence from ClimateScientists Reject Wegener's theory